includes/logging/DeleteLogFormatter.php

   1 <?php
   2 /**
   3  * Formatter for delete log entries.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @author Niklas Laxström
  22  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  23  * @since 1.22
  24  */
  25
  26 /**
  27  * This class formats delete log entries.
  28  *
  29  * @since 1.19
  30  */
  31 class DeleteLogFormatter extends LogFormatter {
  32         protected function getMessageKey() {
  33                 $key = parent::getMessageKey();
  34                 if ( in_array( $this->entry->getSubtype(), array( 'event', 'revision' ) ) ) {
  35                         if ( count( $this->getMessageParameters() ) < 5 ) {
  36                                 return "$key-legacy";
  37                         }
  38                 }
  39
  40                 return $key;
  41         }
  42
  43         protected function getMessageParameters() {
  44                 if ( isset( $this->parsedParametersDeleteLog ) ) {
  45                         return $this->parsedParametersDeleteLog;
  46                 }
  47
  48                 $params = parent::getMessageParameters();
  49                 $subtype = $this->entry->getSubtype();
  50                 if ( in_array( $subtype, array( 'event', 'revision' ) ) ) {
  51                         // $params[3] here is 'revision' for page revisions, 'oldimage' for
  52                         // file versions, or a comma-separated list of log_ids for log
  53                         // entries. $subtype here is 'revision' for page revisions and file
  54                         // versions, or 'event' for log entries.
  55                         if ( ( $subtype === 'event' && count( $params ) === 6 )
  56                                 || ( $subtype === 'revision' && isset( $params[3] )
  57                                         && ( $params[3] === 'revision' || $params[3] === 'oldimage' )
  58                                 )
  59                         ) {
  60                                 $paramStart = $subtype === 'revision' ? 4 : 3;
  61
  62                                 $old = $this->parseBitField( $params[$paramStart + 1] );
  63                                 $new = $this->parseBitField( $params[$paramStart + 2] );
  64                                 list( $hid, $unhid, $extra ) = RevisionDeleter::getChanges( $new, $old );
  65                                 $changes = array();
  66                                 foreach ( $hid as $v ) {
  67                                         $changes[] = $this->msg( "$v-hid" )->plain();
  68                                 }
  69                                 foreach ( $unhid as $v ) {
  70                                         $changes[] = $this->msg( "$v-unhid" )->plain();
  71                                 }
  72                                 foreach ( $extra as $v ) {
  73                                         $changes[] = $this->msg( $v )->plain();
  74                                 }
  75                                 $changeText = $this->context->getLanguage()->listToText( $changes );
  76
  77                                 $newParams = array_slice( $params, 0, 3 );
  78                                 $newParams[3] = $changeText;
  79                                 $count = count( explode( ',', $params[$paramStart] ) );
  80                                 $newParams[4] = $this->context->getLanguage()->formatNum( $count );
  81
  82                                 $this->parsedParametersDeleteLog = $newParams;
  83                                 return $this->parsedParametersDeleteLog;
  84                         } else {
  85                                 $this->parsedParametersDeleteLog = array_slice( $params, 0, 3 );
  86                                 return $this->parsedParametersDeleteLog;
  87                         }
  88                 }
  89
  90                 $this->parsedParametersDeleteLog = $params;
  91                 return $this->parsedParametersDeleteLog;
  92         }
  93
  94         protected function parseBitField( $string ) {
  95                 // Input is like ofield=2134 or just the number
  96                 if ( strpos( $string, 'field=' ) === 1 ) {
  97                         list( , $field ) = explode( '=', $string );
  98
  99                         return (int)$field;
 100                 } else {
 101                         return (int)$string;
 102                 }
 103         }
 104
 105         public function getActionLinks() {
 106                 $user = $this->context->getUser();
 107                 if ( !$user->isAllowed( 'deletedhistory' )
 108                         || $this->entry->isDeleted( LogPage::DELETED_ACTION )
 109                 ) {
 110                         return '';
 111                 }
 112
 113                 switch ( $this->entry->getSubtype() ) {
 114                         case 'delete': // Show undelete link
 115                                 if ( $user->isAllowed( 'undelete' ) ) {
 116                                         $message = 'undeletelink';
 117                                 } else {
 118                                         $message = 'undeleteviewlink';
 119                                 }
 120                                 $revert = Linker::linkKnown(
 121                                         SpecialPage::getTitleFor( 'Undelete' ),
 122                                         $this->msg( $message )->escaped(),
 123                                         array(),
 124                                         array( 'target' => $this->entry->getTarget()->getPrefixedDBkey() )
 125                                 );
 126
 127                                 return $this->msg( 'parentheses' )->rawParams( $revert )->escaped();
 128
 129                         case 'revision': // If an edit was hidden from a page give a review link to the history
 130                                 $params = $this->extractParameters();
 131                                 if ( !isset( $params[3] ) || !isset( $params[4] ) ) {
 132                                         return '';
 133                                 }
 134
 135                                 // Different revision types use different URL params...
 136                                 $key = $params[3];
 137                                 // This is a CSV of the IDs
 138                                 $ids = explode( ',', $params[4] );
 139
 140                                 $links = array();
 141
 142                                 // If there's only one item, we can show a diff link
 143                                 if ( count( $ids ) == 1 ) {
 144                                         // Live revision diffs...
 145                                         if ( $key == 'oldid' || $key == 'revision' ) {
 146                                                 $links[] = Linker::linkKnown(
 147                                                         $this->entry->getTarget(),
 148                                                         $this->msg( 'diff' )->escaped(),
 149                                                         array(),
 150                                                         array(
 151                                                                 'diff' => intval( $ids[0] ),
 152                                                                 'unhide' => 1
 153                                                         )
 154                                                 );
 155                                                 // Deleted revision diffs...
 156                                         } elseif ( $key == 'artimestamp' || $key == 'archive' ) {
 157                                                 $links[] = Linker::linkKnown(
 158                                                         SpecialPage::getTitleFor( 'Undelete' ),
 159                                                         $this->msg( 'diff' )->escaped(),
 160                                                         array(),
 161                                                         array(
 162                                                                 'target' => $this->entry->getTarget()->getPrefixedDBkey(),
 163                                                                 'diff' => 'prev',
 164                                                                 'timestamp' => $ids[0]
 165                                                         )
 166                                                 );
 167                                         }
 168                                 }
 169
 170                                 // View/modify link...
 171                                 $links[] = Linker::linkKnown(
 172                                         SpecialPage::getTitleFor( 'Revisiondelete' ),
 173                                         $this->msg( 'revdel-restore' )->escaped(),
 174                                         array(),
 175                                         array(
 176                                                 'target' => $this->entry->getTarget()->getPrefixedText(),
 177                                                 'type' => $key,
 178                                                 'ids' => implode( ',', $ids ),
 179                                         )
 180                                 );
 181
 182                                 return $this->msg( 'parentheses' )->rawParams(
 183                                         $this->context->getLanguage()->pipeList( $links ) )->escaped();
 184
 185                         case 'event': // Hidden log items, give review link
 186                                 $params = $this->extractParameters();
 187                                 if ( !isset( $params[3] ) ) {
 188                                         return '';
 189                                 }
 190                                 // This is a CSV of the IDs
 191                                 $query = $params[3];
 192                                 // Link to each hidden object ID, $params[1] is the url param
 193                                 $revert = Linker::linkKnown(
 194                                         SpecialPage::getTitleFor( 'Revisiondelete' ),
 195                                         $this->msg( 'revdel-restore' )->escaped(),
 196                                         array(),
 197                                         array(
 198                                                 'target' => $this->entry->getTarget()->getPrefixedText(),
 199                                                 'type' => 'logging',
 200                                                 'ids' => $query
 201                                         )
 202                                 );
 203
 204                                 return $this->msg( 'parentheses' )->rawParams( $revert )->escaped();
 205                         default:
 206                                 return '';
 207                 }
 208         }
 209 }